SE503930C2 - Wireless phone adapter - Google Patents

Wireless phone adapter

Info

Publication number
SE503930C2
SE503930C2 SE9404411A SE9404411A SE503930C2 SE 503930 C2 SE503930 C2 SE 503930C2 SE 9404411 A SE9404411 A SE 9404411A SE 9404411 A SE9404411 A SE 9404411A SE 503930 C2 SE503930 C2 SE 503930C2
Authority
SE
Sweden
Prior art keywords
antenna
active element
telephone
ground plane
metal plate
Prior art date
Application number
SE9404411A
Other languages
Swedish (sv)
Other versions
SE9404411L (en
SE9404411D0 (en
Inventor
Magnus Marthinsson
Ina Ericsson
Original Assignee
Allgon Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Allgon Ab filed Critical Allgon Ab
Priority to SE9404411A priority Critical patent/SE503930C2/en
Publication of SE9404411D0 publication Critical patent/SE9404411D0/en
Priority to PCT/SE1995/001530 priority patent/WO1996019845A1/en
Priority to AU43209/96A priority patent/AU4320996A/en
Publication of SE9404411L publication Critical patent/SE9404411L/en
Publication of SE503930C2 publication Critical patent/SE503930C2/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/16—Connectors or connections adapted for particular applications for telephony

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Transceivers (AREA)
  • Details Of Aerials (AREA)

Abstract

An antenna connector is used having a ground plane in order to connect an outside antenna with the antenna of a portable telephone via a coaxial cable. The electronic coupling is carried out by means of capacitive electronic coupling between an active member of the cable and the permanent antenna of the telephone. In order to increase the capactive electronic coupling between the active member and the antenna, the active member (5, 15) is screened to the sourroundings at least in one direction from the active member. The screening is carried out by means of a metal plate (12) which is galvanicly connected with the ground plane. The electrical length of the plate is a certain fraction of the wave length of the frequency band of the telephone.

Description

35 7503 930 telefon med tillhörande antenndel och adapter. 35 7503 930 telephone with associated antenna part and adapter.

En telefon 1 har på sin ovansida en helixantenn 2, eventuellt är denna helixantenn kompletterad med en utdragbar genom helixantennen förlöpande ståndarantenn. Den till telefonen förenade antennen i form av helixantennen 2 och/eller ståndar- antennen förutsättes fungera tillfredsställande när inte Z telefonen med tillhörande antenn befinner sig på avskärmad plats. På avskärmad plats behöver antennen förstärkning i form av en utanför avskärmat område belägen antenn som lösbart kan anslutas till den befintliga antennen på telefonen.A telephone 1 has on its upper side a helix antenna 2, possibly this helix antenna is supplemented with a extendable upright antenna extending through the helix antenna. The antenna connected to the telephone in the form of the helix antenna 2 and / or the upright antenna is assumed to function satisfactorily when the Z telephone with the associated antenna is not in a shielded place. In the shielded location, the antenna needs amplification in the form of an antenna located outside the shielded area that can be releasably connected to the existing antenna on the telephone.

Nämnda ytterligare antenn betecknas i ritningsfiguren med 3 och befinner sig således på avstånd från telefonen 1. En antenn- ledning 4 i form av en koaxialkabel från antennen 3 är förenad med ett aktivt element 5, som t.ex. kan utgöras av en spole eller en platta. Det aktiva elementet utgör verksamma delen av adaptern och kan lösbart förläggas intill antennen 2 så att kapacitiv koppling sker mellan aktiva elementet 5 och antennen 2. Således kommer signaler intagna av antennen 3 att tillföras telefonen 1 via koaxialkabeln 4, det aktiva elementet 5 och helixantennen 2. Utsändning av signaler sker i andra riktningen.Said further antenna is indicated in the drawing figure by 3 and is thus at a distance from the telephone 1. An antenna cable 4 in the form of a coaxial cable from the antenna 3 is connected to an active element 5, such as e.g. can be a coil or a plate. The active element forms the active part of the adapter and can be releasably placed next to the antenna 2 so that capacitive connection takes place between the active element 5 and the antenna 2. Thus, signals received by the antenna 3 will be applied to the telephone 1 via the coaxial cable 4, the active element 5 and the helical antenna 2. Transmissions are transmitted in the other direction.

Adaptern innefattar vidare ett litet jordplan 6, som har ett plan 7 uppbärande det aktiva elementet 5 och är galvaniskt förenat med axialkabelns 4 hölje. Vidare sträcker sig i vinkel nedåt från planet 7 ett andra plan 8. Vid adapterns användning kommer planen 7 och 8 att bli förlagda mot eller nära telefonens ovansida 9 resp. ena utsida 10. Företrädesvis har adaptern också ett hölje av elektriskt oledande material och detta antydes i figur l och 4 med huvdelen ll.The adapter further comprises a small ground plane 6, which has a plane 7 supporting the active element 5 and is galvanically connected to the casing of the axial cable 4. Furthermore, a second plane 8 extends at an angle downwards from the plane 7. When the adapter is used, the planes 7 and 8 will be located towards or near the top 9 or one outside 10. Preferably, the adapter also has a housing of electrically non-conductive material and this is indicated in Figures 1 and 4 by the hood part 11.

Man har nu funnit att kopplingen mellan antennen 2 och aktiva elementet är känslig och bör ökas. Särskilt gäller detta när jordplanet 6 har otillräcklig storlek vid en liten lätthanterlig adapter såsom t.ex. den enligt föreliggande uppfinning. Enligt uppfinningen förbättras nu kopplingen genom 10 15 20 25 30 503 930 att ett passivt element i form av en böjd metallskiva 12 förlägges i närheten av det aktiva elementet 5. I det visade utföringsexemplet är metallskivan galvaniskt förenad med planet 7 och omböjd mot det aktiva elementet så att den åtminstone i en riktning avskärmar det aktiva elementet 5 mot omgivningen.It has now been found that the connection between the antenna 2 and the active element is sensitive and should be increased. This is especially true when the ground plane 6 is of insufficient size with a small, easy-to-handle adapter such as e.g. the one according to the present invention. According to the invention, the coupling is now improved by placing a passive element in the form of a curved metal plate 12 in the vicinity of the active element 5. In the embodiment shown, the metal plate is galvanically connected to the plane 7 and bent towards the active element. so that it shields the active element 5 from the environment at least in one direction.

Företrädesvis skall avskärmningen vara sådan att strålning från aktiva elementet 5 och ut från telefonen avskärmas.Preferably, the shield should be such that radiation from the active element 5 and out of the telephone is shielded.

Metallskivan 12 är således ansluten till jordplanet 6, som såsom tidigare nämnts är galvaniskt förenat med axialkabelns ledande hölje eller skärm.The metal plate 12 is thus connected to the ground plane 6, which as previously mentioned is galvanically connected to the conductive casing or shield of the axial cable.

Fig. 4-6 visar samma som fig. 1-3 men det aktiva elementet är av annan form. Således utgöres detta här av en metallplatta 15 som blir förlagd stående intill antennen 2. Såsom visas är plattan 15 ansluten till koaxialkabeln 4 via en oisolerad slinga 16 med Z-form. Denna slinga ger en impedansanpassning för kopplingen mellan antennen 2 och aktiva plattan 15.Figs. 4-6 show the same as Figs. 1-3 but the active element is of a different shape. Thus, this is constituted by a metal plate 15 which is placed standing next to the antenna 2. As shown, the plate 15 is connected to the coaxial cable 4 via an uninsulated Z-shaped loop 16. This loop provides an impedance match for the coupling between the antenna 2 and the active plate 15.

Adaptern enligt denna utföringsform är i övrigt lik den enligt fig. 1-3, varför samma hänvisningssiffror ingår.The adapter according to this embodiment is otherwise similar to that according to Figs. 1-3, so the same reference numerals are included.

Den elektriska längden för metallskivan 12 göres så att den blir ett visst förhållande av våglängden hos telefonens frekvensband. Således blir den elektriska längden t.ex. en kvarts våglängd för de aktuella frekvenserna 824-960 MHz.The electrical length of the metal disc 12 is made so that it becomes a certain ratio of the wavelength of the frequency band of the telephone. Thus, the electrical length becomes e.g. a quarter wavelength for the current frequencies 824-960 MHz.

Härigenom erhålles en hög impedans i slutet av jordplanet och därmed ökas kopplingen i denna punkt. Metallskivans bredd kan anpassas till önskad kopplingseffekt och andra elektriska verkningar och kan vara från trådbredd till bredden för det aktiva elementet.As a result, a high impedance is obtained at the end of the ground plane and thus the coupling at this point is increased. The width of the metal plate can be adapted to the desired coupling effect and other electrical effects and can be from the wire width to the width of the active element.

Claims (5)

10 15 20 25 505 930 PATENTKRAV10 15 20 25 505 930 PATENT CLAIMS 1. Adapter med jordplan för att med en koaxialkabel tillfälligt förbinda en friliggande antenn med en en mobil telefon tillhörande antenn, varvid förbindningen sker med kapacitiv koppling mellan ett med kabeln förenat aktivt element 15) är avskärmat mot omgivningen medelst en med koaxialkabelns hölje och telefonantennen, varvid det aktiva elementet (5; förenad skärm , k ä n n e t e c k n a d av, att skärmen består av en med ett jordplan (7, 8) galvaniskt förenad metallskiva (12) med sådan orientering från jordplanet att strålningen från det aktiva elementet (5; 15) i riktning från telefonens antenn avskärmas, varvid metallskivans elektriska längd utgör bråkdel av våglängden inom det använda frekvensbandet. av att detA ground plane adapter for temporarily connecting a free-standing antenna with a coaxial cable to an antenna belonging to a mobile telephone, the connection taking place with a capacitive connection between an active element connected to the cable 15) is shielded from the environment by a coaxial cable housing and the telephone antenna, wherein the active element (5; united screen, characterized in that the screen consists of a metal plate (12) galvanically connected to a ground plane (7, 8) with such an orientation from the ground plane that the radiation from the active element (5; 15) in the direction from the antenna of the telephone is shielded, the electrical length of the metal disc constituting a fraction of the wavelength within the frequency band used. 2. Adapter enligt krav 1, k ä n n e t e c k n a d aktiva elementet utgöres av en spole (5).Adapter according to claim 1, characterized in that the active element consists of a coil (5). 3. Adapter enligt krav 1, k ä n n e t e c k n a d av, att det aktiva elementet utgöres av en platta (15).3. An adapter according to claim 1, characterized in that the active element consists of a plate (15). 4. Adapter enligt krav 1, k ä n n e t e c k n a d av, att metallskivan (12) är böjd mot det aktiva elementet (5; 15) och omfattar en sektor om ca. 90°.4. An adapter according to claim 1, characterized in that the metal plate (12) is bent towards the active element (5; 15) and comprises a sector of approx. 90 °. 5. Adapter enligt krav 1, k ä n n e t e c k n a d av, att metallskivan (12) utgör ett passivt element.5. An adapter according to claim 1, characterized in that the metal plate (12) constitutes a passive element.
SE9404411A 1994-12-19 1994-12-19 Wireless phone adapter SE503930C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9404411A SE503930C2 (en) 1994-12-19 1994-12-19 Wireless phone adapter
PCT/SE1995/001530 WO1996019845A1 (en) 1994-12-19 1995-12-18 Connector for portable telephone
AU43209/96A AU4320996A (en) 1994-12-19 1995-12-18 Connector for portable telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9404411A SE503930C2 (en) 1994-12-19 1994-12-19 Wireless phone adapter

Publications (3)

Publication Number Publication Date
SE9404411D0 SE9404411D0 (en) 1994-12-19
SE9404411L SE9404411L (en) 1996-06-20
SE503930C2 true SE503930C2 (en) 1996-09-30

Family

ID=20396385

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9404411A SE503930C2 (en) 1994-12-19 1994-12-19 Wireless phone adapter

Country Status (3)

Country Link
AU (1) AU4320996A (en)
SE (1) SE503930C2 (en)
WO (1) WO1996019845A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI954552A (en) * 1995-09-26 1997-03-27 Nokia Mobile Phones Ltd Device for connecting a radio telephone to an external antenna
US6239769B1 (en) 1996-12-18 2001-05-29 Smarteq Wireless Ab Antenna connector
SE523526C2 (en) 2000-07-07 2004-04-27 Smarteq Wireless Ab Adapter antenna designed to interact electromagnetically with an antenna built into a mobile phone

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220955A (en) * 1979-05-29 1980-09-02 Rockwell International Corporation RF coupling device for connecting a hand held radio to an external device without removing the antenna
ATE154734T1 (en) * 1991-12-10 1997-07-15 Blaese Herbert R AUXILIARY ANTENNA
GB2266997A (en) * 1992-05-07 1993-11-17 Wallen Manufacturing Limited Radio antenna.

Also Published As

Publication number Publication date
SE9404411L (en) 1996-06-20
AU4320996A (en) 1996-07-10
SE9404411D0 (en) 1994-12-19
WO1996019845A1 (en) 1996-06-27

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